/Engine/Source/Runtime/AudioExtensions/Public/ISoundfieldEndpoint.h
This factory is used to expose Soundfield Endpoint types to the editor. Once a factory is constructed and RegisterEndpointType is called, it will be exposed as a type of endpoint That a submix in the submix graph could be constructed with. Also note that an implementation of ISoundfieldDecoder is not necessary for soundfield formats that are only used for soundfield endpoints.
class ISoundfieldEndpointFactory : public [ISoundfieldFactory](API\Runtime\AudioExtensions\ISoundfieldFactory)